just noticed customers can buy a programmer with all 4 calibrations. my question is how well will these calibrations work with my current SCT custom tunes(done by BILL)? will i need to purchase new custom tunes? thanks......
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2004 FORD F250 4x4 CC SB 6.0L AUTO....
Tuned by PHP....  SCT-X3.... Mbrp duals....and more.... 
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